口腔正畸学中支抗的稳定具有非常重要的作用,是正畸治疗成败的关键。口腔正畸常用的加强支抗的方法有口外弓、“J”钩、横腭杆、Nance弓、Ⅱ类颌间牵引和第一、二磨牙双带环及微种植体支抗。其中微种植体支抗的材质、长度和直径、适应证、植入部位、植入成功的临床标准是重点内容。现就以上支抗的特点及其在临床的应用进行综述。 Orthodontics in the stability of the support has a very important role in orthodontic treatment is the key to success. Orthodontics commonly used methods to strengthen the support of the buccal arch, “J ” hook, transverse palate, Nance bow, class II intermaxillary traction and the first and second molars double band ring and micro-implant support. The micro implant implant material, length and diameter, indications, implantation site, the clinical criteria for successful implantation is the key content. Now on the characteristics of the above and its clinical application of the review.